Dredge.



G. W. DIEHL.

DREDGE.

APPLICATION FILED NOV. 11, 1908.

Patented Nov. 5 1909.

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DEEDGE.

APPLICATION FILED NOV. 11, 1998.

Patented Nov. 9, 1909.

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G. W. DIEHL.

DEEDGE.

APPLICATION FILED NOV.11, 1908.

Patented Nov. 9, 1909 3 SHEETSSHEET 3.

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- CHARLES W. DIEHL, OF NEW YORK, N. Y.

DREDGE.

To all whom it may concern:

Be it known that I, CHARLES l/V. DIEHL, a citizen of the United States,and a resident of the borough of the Bronx, of the city of New York, inthe county and State of New York, have invented certain new and usefulImprovements in Dredges, of which the following is a specification,reference being had to the accompanying drawings, forming a part hereof.

The invention relates particularly to dredges of the type illustratedand described in Letters Patent of the United States No. 822,865,granted June 5, 1906 to Thomas P. Payne. In such a dredge, there is amovable excavating element which, by means of suit able supports andhoisting machinery, can be brought into various positions where work isto be performed. This excavating element, as illustrated in the LettersPatent above referred to, includes a pump and excavating tool inclosedwithin a casing or chamber, and the latter also contains a motor fordriving the tool and furnishing power to operate the pump.

Aside from the diiiiculty of providing a thoroughly water proof casingfor the motor, which is necessary under the conditions of practical use,it has proven to be a matter of considerable expense to build anexcavating element of this sort with a motor included as a part of themovable unit. For this reason it is proposed, in accordance with thepresent invention, to supply power to the excavating element from astationary motor, which may be located upon the scow referred to in theLetters Patent before mentioned or in any other suitable place, insteadof upon and as a part of the movable excavating unit or element as shownin said Letters Patent.

Furthermore and in accordance with the present invention, a mechanicalmeans is provided to transmit power from a stationary element to theexcavating element in a simple, practical and convenient manner, all ofwhich will be described hereinafter with reference to the accompanyingdrawings.

In said drawings, Figure l is a view in side elevation of an apparatusembodying the invention, some of the parts being shown in section. Fig.2 is a plan view thereof. Fig. 3 is a plan view of a modification. Fig.4 is a detail view of what may be referred to Specification of LettersPatent.

Application filed November 11, 1908.

Patented Nov. 9, 1909.

Serial No. 462,003.

as the stationary element of Fig. 3. Fig. 5 is a view in side elevation,with some parts broken away, of the form shown in Fig. 3, and, Fig. 6 isa detail View of the excavating element, showing the power connectionstherewith, in accordance with the form illustrated in Fig. 3.

The element or chamber forming the excavating unit is indicated at f inthe drawings and, as shown, contains a pump M havmg a discharge pipe mand excavating tools N suitably mounted in a frame provided therein. Thepump, as will be understood, is arranged so that it will receive thematerial which is stirred up by the excavating toolsor in some other wayand which it discharges through the pipe m which is, of course, led upthrough the chamber and to a suitable point of discharge (not shown).Moreover, the pump will be seen to be driven from a vertical shaft mfrom which also, through the medium of intermeshing gears, the shafts 71may be turned upon which the tools N are secured. The shaft m isprovided with a bevel gear m which meshes with another bevel gear mprovided upon a horizontal shaft m journaled in the top of theexcavating element. In Figs. 1 and 2, the gear or is provided upon theoutside of the casing inclosing the excavating element and isoperatively engaged by a bevel gear 8 upon a shaft 8 through which itwill be possible to transmit power to the excavating element and topermit the excavating element to be moved about at the same time. Suchpower may in turn be transmitted to the shaft from a stationary elementindicated in the drawings by the character t. This element embodies asuitable source of power which is represented by a shaft 3, the latterreceiving its power from the ultimate source through the medium of apulley 25 From this shaft t suitable connections are made with the upperend of the shaft 8. In the present case, to enable the shaft 8 to have auniversal motion, that is to enable it to be moved up and down and fromside to side and to assume any desired position, the upper end of theshaft .9 is provided with a bevel gear 3 which meshes with another bevelgear i upon a shaft 25* journaled in a turntable t which is mounted uponthe stationary member t. Through the medium of a vertical shaft 25 andgears t, t and t the shaft t is operaunderneath the stationary element.

tively connected with the gear The stationary member t may, of course,be mounted in any suitable position with reference to the matter to beexcavated, and may be placed upon a scow or other vessel wheresubaqueous excavations are to be made.

It will be understood that suitable arrangments must be made for theraising and lowering and the moving about of the excavating element, butany suitable means may be adopted for this purpose and as such means areso common and well known in the art and as the structure of such meansdoes not concern the present invention, they are sufficientlyillustrated in the drawings by being indicated by a cable G in Fig. 5.It will be necessary however to maintain the stationary element and theexcavating element always the. same distance apart and for this purposeand as incidentally furnishing suitable bearings for the shaft .9 a boom14 is interposed between these two elements and its ends are pivoted tothe shafts t and m respectively through the medium of steel connectingpieces u provided upon the boom u, as shown in Figs. 1 and 2. Moreover,the shaft 8. is preferably made in two parts whichare connected by meansof a universal joint 8 to permit this shaft to bend more or less withoutseriously affecting the transmission of power and without injury to theshaft. It will be obvious that such mechanism will permit power to betransmitted freely to the excavating element while the latter is beingmoved about to different operating positions, and it will. be observedthat the excavating element may be placed in any position within therange of the boom with the exception of a small area directly In orderto make the area underneath the stationary element which cannot bereached by the boom, as small as possible, the gear 8 is made relativelysmall while the. gear i is made relatively large so as to permit theboom 14 to approach as nearly as possible to a vertical position.

The alternative form shown in Figs. 3 and 5 illustrates the employmentof a driving chain in lieu of a shaft as a medium of power transmissionbetween the stationary and excavating elements. One driving chain will,of course, be sufficient for such power transmission, although theprovision of two driving chains or two shafts will enable the boom toassume a more nearly vertical position and such a construction,moreover, lends itself more readily to the addition of a cas ingto coverup the gearing and other connections between the lower end of the shaftor chain and the excavating element.

Referring to Figs. 3 to 6 inclusive, where the double chain drive isillustrated, it will be seen that a casing s is provided which entirelycovers the chains 8 and their sprocket connections .9 and that thesecasings are provided with cross braces .9 which together with thecasings constitute the boom. The casing f around the excavating elementis enlarged sufficiently to inclose the gears m and m, the sprocketwheels 8 being placed upon the shafts m and 23* respectively. It will beseen how such connections enable the complete protection of the mechanism from grit and any other material which would possibly tend to wearthem out or interfere with their proper action.

Various changes may be made in the embodiment of the improvementswithout departing from the invention.

I claim as my invention: a

1. In a dredge, the combination of a movable excavating element, astationary. powersupply element, a boom connecting. the two elements,means to transmit power along the boom from one element to the other andmeans to discharge the excavated matter from a point near the excavatingelement.

2. In a dredge, the combination of an excavating element including apump, a stationary element having a source of power, means to maintain aconstant distance between the two elements, and means to trans.- mitpower from one element to the other.

3. In a dredge, the combination of an excavatingv element including apump, a stationary element having a source of power, a boom connectingthe two elements, and means to transmit power along the boom from oneelement to the other.

4. In a. dredge, the combination of a movable excavating element, astationary powersupply element, a turntable upon. the power supplyelement, a boom connecting the two elements, means to transmit poweralong the boom from one element to the other and means to discharge theexcavated matter from a point near the excavating element.

In a dredge, thecombination of a movable excavating element, astationary powersupply element, a boom pivotally related to the twoelements, means to transmit power along the boom from one element to theother and means to discharge the excavated matter from a point near theexcavating element.

6. In a dredge, the combination of a movable excavating element, astationary powersupply element, av boom connecting the two elements,means to transmit power along the Y boom from one element to the other,means to raise and lower the excavating element and means to dischargethe excavated matter from a point near the excavating element.

7 In a dredge, the combination of a movable excavating element, astationary'powersupply element, a boom connecting the twoelements, ashaft extending along the'boom to transmit power from. oneelementto-the].

other and means to discharge the excavated matter from a point near theexcavating element.

8. In a dredge, the combination of a movable excavating element, astationary powersupply element, a boom connecting the two elements, ashaft arranged along the boom to transmit power from one element to theother, a relatively large bevel gear mounted upon the power-supplyelement, a relatively small bevel gear mounted upon the shaft inoperative engagement with the first named gear and means to dischargethe excavated matter from a point near the excavating element.

9. In a dredge, the combination of a movable excavating element, astationary powersupply element, a boom connecting the two elements, andmeans on each side of the boom to transmit power from one element to theother.

10. In a dredge, the combination of a movable excavating element, astationary power-supply element, a boom connecting the two elements,means on each side of the boom to transmit power from one element to theother, connections between said means and the excavating element, and acasing to inclose said connections.

This specification signed and witnessed this 4th day of November, A. D.,1908.

CHARLES W. DIEHL.

Signed in the presence of:

G. MGGRANN, LUOIUS E. VARNEY.

